non/Timeline.C

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/*******************************************************************************/
/* Copyright (C) 2008 Jonathan Moore Liles */
/* */
/* This program is free software; you can redistribute it and/or modify it */
/* under the terms of the GNU General Public License as published by the */
/* Free Software Foundation; either version 2 of the License, or (at your */
/* option) any later version. */
/* */
/* This program is distributed in the hope that it will be useful, but WITHOUT */
/* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or */
/* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for */
/* more details. */
/* */
/* You should have received a copy of the GNU General Public License along */
/* with This program; see the file COPYING. If not,write to the Free Software */
/* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
/*******************************************************************************/
#include "Timeline.H"
#include "Tempo_Track.H"
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#include "Time_Track.H"
#include "Audio_Track.H"
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#include <FL/Fl_Scrollbar.H>
void
cb_hscroll ( Fl_Widget *w, void *v )
{
Scalebar *sb = (Scalebar*)w;
if ( sb->zoom_changed() )
{
timeline->fpp = sb->zoom() * 1;
int maxx = timeline->ts_to_x( timeline->length );
sb->range( 0, maxx );
timeline->redraw();
}
else
{
timeline->position( sb->value() );
}
printf( "%lu\n", timeline->xoffset );
}
void
cb_vscroll ( Fl_Widget *w, void *v )
{
Fl_Scrollbar *sb = (Fl_Scrollbar*)w;
timeline->tracks->position( timeline->tracks->x(), (timeline->rulers->y() + timeline->rulers->h()) - sb->value() );
timeline->yposition = sb->value();
timeline->vscroll->range( 0, timeline->tracks->h() - timeline->h() - timeline->rulers->h() );
timeline->damage( FL_DAMAGE_SCROLL );
}
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Timeline::Timeline ( int X, int Y, int W, int H, const char* L ) : Fl_Group( X, Y, W, H, L )
{
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xoffset = 0;
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{
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Scalebar *o = new Scalebar( X, H - 18, W - 18, 18 );
o->range( 0, 48000 * 2 );
o->zoom_range( 2, 8192 );
o->zoom( 256 );
o->type( FL_HORIZONTAL );
o->callback( cb_hscroll, 0 );
hscroll = o;
}
{
Fl_Scrollbar *o = new Fl_Scrollbar( W - 18, Y, 18, H - 18 );
o->type( FL_VERTICAL );
o->step( 10 );
o->callback( cb_vscroll, 0 );
vscroll = o;
}
{
Fl_Pack *o = new Fl_Pack( 0, 0, W - vscroll->w(), H - hscroll->h(), "rulers" );
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o->type( Fl_Pack::VERTICAL );
{
Tempo_Track *o = new Tempo_Track( 0, 0, 800, 24 );
o->color( FL_RED );
o->add( new Tempo_Point( 0, 120 ) );
o->add( new Tempo_Point( 56000, 250 ) );
tempo_track = o;
o->end();
}
{
Time_Track *o = new Time_Track( 0, 24, 800, 24 );
o->color( fl_color_average( FL_RED, FL_WHITE, 0.50f ) );
o->add( new Time_Point( 0, 4, 4 ) );
o->add( new Time_Point( 345344, 6, 8 ) );
time_track = o;
o->end();
}
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o->size( o->w(), o->child( 0 )->h() * o->children() );
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rulers = o;
o->end();
}
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{
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/* Fl_Scroll *o = new Fl_Scroll( 0, 24 * 2, 800, 600 - (24 * 3) ); */
/* o->type( Fl_Scroll::VERTICAL_ALWAYS ); */
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sample_rate = 44100;
fpp = 256;
_beats_per_minute = 120;
length = sample_rate * 60 * 2;
{
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Fl_Pack *o = new Fl_Pack( X, rulers->y() + rulers->h(), W - vscroll->w(), 5000 );
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o->type( Fl_Pack::VERTICAL );
o->spacing( 10 );
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Track *l = NULL;
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for ( int i = 16; i--; )
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{
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Track *o = new Audio_Track( 0, 0, 800, 100 );
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o->prev( l );
if ( l )
l->next( o );
l = o;
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o->end();
}
tracks = o;
o->end();
}
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/* scroll = o; */
/* o->end(); */
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}
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vscroll->range( 0, tracks->h() );
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redraw();
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end();
}
float
Timeline::beats_per_minute ( nframes_t when ) const
{
return tempo_track->beats_per_minute( when );
}
void
Timeline::beats_per_minute ( nframes_t when, float bpm )
{
tempo_track->add( new Tempo_Point( when, bpm ) );
}
/* draw appropriate measure lines inside the given bounding box */
void
Timeline::draw_measure_lines ( int X, int Y, int W, int H, Fl_Color color )
{
fl_line_style( FL_DASH, 2 );
fl_color( fl_color_average( FL_BLACK, color, 0.65f ) );
// int measure = ts_to_x( sample_rate * 60 / beats_per_minute() );
int measure;
for ( int x = X; x < X + W; ++x )
{
measure = ts_to_x( (double)(sample_rate * 60) / beats_per_minute( x_to_ts( x ) + xoffset ));
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/* don't bother with lines this close together */
if ( measure < 4 )
break;
if ( 0 == (ts_to_x( xoffset ) + x) % measure )
fl_line( x, Y, x, Y + H );
}
fl_line_style( FL_SOLID, 0 );
}